From d0758dce9e3328633bc3bff9aeacea6c312ba6b1 Mon Sep 17 00:00:00 2001
From: Flow-sandyu <72751523+Flow-sandyu@users.noreply.github.com>
Date: Mon, 28 Nov 2022 15:27:43 +0800
Subject: [PATCH] =?UTF-8?q?Update=200669.=E4=BF=AE=E5=89=AA=E4=BA=8C?=
 =?UTF-8?q?=E5=8F=89=E6=90=9C=E7=B4=A2=E6=A0=91.md?=
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补充B站视频链接
---
 problems/0669.修剪二叉搜索树.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/problems/0669.修剪二叉搜索树.md b/problems/0669.修剪二叉搜索树.md
index 98af3c26..09959719 100644
--- a/problems/0669.修剪二叉搜索树.md
+++ b/problems/0669.修剪二叉搜索树.md
@@ -18,6 +18,10 @@
 
 ![669.修剪二叉搜索树1](https://img-blog.csdnimg.cn/20201014173219142.png)
 
+# 算法公开课 
+
+**《代码随想录》算法视频公开课：[你修剪的方式不对，我来给你纠正一下！| LeetCode：669. 修剪二叉搜索树](https://www.bilibili.com/video/BV17P41177ud?share_source=copy_web)，相信结合视频在看本篇题解，更有助于大家对本题的理解**。
+
 # 思路
 
 相信看到这道题目大家都感觉是一道简单题（事实上leetcode上也标明是简单）。